自然工质风冷太阳能双级喷射中低温空调制冷系统的设计及性能分析

doi:10.3969/j.issn.0438-1157.2012.12.016

化工学报 ›› 2012, Vol. 63 ›› Issue (12): 3847-3854.DOI: 10.3969/j.issn.0438-1157.2012.12.016

自然工质风冷太阳能双级喷射中低温空调制冷系统的设计及性能分析

卢苇, 陈洪杰, 杨林, 曹聪

广西大学化学化工学院, 广西石化资源加工及过程强化技术重点实验室, 广西南宁 530004

收稿日期:2012-04-04 修回日期:2012-06-20 出版日期:2012-12-05 发布日期:2012-09-03
通讯作者: 卢苇
作者简介:卢苇(1974-),男,教授。
基金资助:
广西研究生教育创新计划项目(GXU11T32540);广西自然科学基金项目(桂科青0991007)。

Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose

LU Wei, CHEN Hongjie, YANG Lin, CAO Cong

Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China

Received:2012-04-04 Revised:2012-06-20 Online:2012-12-05 Published:2012-09-03
Supported by:
supported by Guangxi Postgraduate Educational Innovation Project(GXU11T32540)and Guangxi Natural Science Foundation(0991007).

摘要/Abstract

摘要： 依据中低温空调温度要求,分别以水、氨、R290和R600a为工质,设计了额定制冷量为10kW的风冷太阳能双级喷射制冷系统并对其进行变工况性能分析。在获得相同制冷量和室内温度的条件下,水系统最省材料,其次是氨和R290系统,且二者相当,R600a系统最耗材。4种工质系统均具有较强的变工况性能;综合考虑环境温度和太阳辐照度的影响,各系统制冷能力相当。水系统的COP较其他系统的高,且在低太阳辐照度时更明显;其余3个系统COP从高到低依次为氨、R290、R600a。在太阳辐照度较弱地区,使用水喷射制冷系统更合理。

关键词: 太阳能, 喷射制冷, 自然工质, 空调

Abstract: According to the requirement of middle and low temperature air conditioning,the solar-powered air-cooled two-staged ejector cooling system with rated cooling capacity of 10 kW is designed,using water,ammonia,R290 and R600a as working fluids separately.The performance is analyzed.At certain cooling capacity and indoor temperature,the water system is the most material-saving system,followed by the ammonia and R290 ones with equivalent consumption,and the R600a system is the most material-consuming one.The four systems have relatively perfect off-design performance and their cooling capacities are almost the same on comprehensive consideration of the influences of ambient temperature and solar irradiance.Among the four systems,the water system presents higher COP value,the effect of which is more obvious under weaker solar irradiance,followed by ammonia system,R290 and R600a systems. A solar-powered air-cooled ejector refrigeration system with water as working fluid is more suitable for use in the regions with relatively weak solar irradiance.

Key words: solar energy, ejector refrigeration, natural working fluid, air conditioning

中图分类号:

TB6
S214.4

卢苇, 陈洪杰, 杨林, 曹聪. 自然工质风冷太阳能双级喷射中低温空调制冷系统的设计及性能分析[J]. 化工学报, 2012, 63(12): 3847-3854.

LU Wei, CHEN Hongjie, YANG Lin, CAO Cong. Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose[J]. CIESC Journal, 2012, 63(12): 3847-3854.

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自然工质风冷太阳能双级喷射中低温空调制冷系统的设计及性能分析

Design and performance analysis of solar-powered air-cooled two-staged ejector cooling systems with natural refrigerants for middle and low temperature purpose

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